Atari 400

E
Editing, st:reen, 13 GOTO, 17
Editor, Screen, 24
with conditional branching, 17
END, 9 GRAPHICS, 45
before subroutine, 7
Graphics
End of file, 14 Modes, 46-47
Error messages, B-1 through B-3 Statements, 48
Escape key, 5 COLOR, 48
with Control Graphics Symbols, F-1
DRAWTO, 49
EXP, 33 GET, 45
exp, 5 GRAPHICS, 48
Exponentiation symbol, 6
LOCATE, 48
Expression, 1
PLOT, 49
Arithmetic (see aexp)
POSITION, 49
Logical (see lexp)
PUT, 49
String (see sexp)
SETCOLOR, 50
F filename, breakdown, 27
XIO (Fill), 54
Graphics Control Characters, 56
filespec, 5
H
Usage, 26, 27
Harmony, 57
Fill (XIO), 54
Hexadecimal
FOR/NEXT, 15
/
Decimal Conversion Program, H-18
building arrays and matrices, 42
Hexcode Loader program, 64
with STEP, 15
I
without STEP, 15
INPUT, 25
FRE, 35
Input/Output Commands, 23
Function, 1
CLOAD,
24
Arithmetic
CLOSE, 27
ABS, 33
CSAVE,
24
CLOG, 33
DATA, 28
EXP, 33
DOS, 25
INT, 33
ENTER,
25
LOG, 34
GET,
28
RND, 34
INPUT, 25
SGN, 34
LOAD,
26
SQR, 34
LPRINT, 26
Built-in, 7
NOTE, 26
Derived, E-1
OPEN, 26
Library, 33
POINT,
28
Special Purpose, 35
PRINT, 3, 5, 14, 26
ADR, 35
PUT,
28
FRE, 35
READ,
28
PEEK, 35
SAVE,
29
POKE, 35
STATUS,
29
USR,36
XIO, 29
Trigonometric, 34
Input/Output Devices
ATN, 34
Disk.
Drives (D:), 24
cos, 34
Keyboard (K:), 23
DEG, 35
Line Printer (L:), 23
RAD, 35
Program Recorder (C:), 23
SIN, 35
RS-232
Interface (R:), 24
Screen Editor (E:), 24
G Game controllers
TV Monitor (S:), 24
Keyboard, 59
INT, 33
Joystick, 59
Internal pointer for DATA, 21
Paddle, 59
Input/Output Control Block, 23
Video Graffitti program, H-12 through H-13
Inverse Key, 5
Game controller commands
Invisible graphics cursor, 48-49
PADDLE, 59
IOCB (see Input/Output Control Block)
PTRIG, 59
J
STICK, 59
Joystick Controller, 59
STRIG, 60
GET,
28,49
K
Keyboard (K:), 23
GOSUB/RETURN, 16 ,2 1
Keyboard Controllers, 59
118 Index